SEVERAL YEARS AGO I began asking my friends and family to tell me their passwords. I had come to believe that these tiny personalized codes get a bum rap. Yes, I understand why passwords are universally despised: the strains they put on our memory, the endless demand to update them, their sheer number. I hate them, too. But there is more to passwords than their annoyance. In our authorship of them, in the fact that we construct them so that we (and only we) will remember them, they take on secret lives.

Many of our passwords are suffused with pathos, mischief, sometimes even poetry. Often they have rich back stories. A motivational mantra, a swipe at the boss, a hidden shrine to a lost love, an inside joke with ourselves, a defining emotional scar — these keepsake passwords, as I came to call them, are like tchotchkes of our inner lives. They derive from anything: Scripture, horoscopes, nicknames, lyrics, book passages. Like a tattoo on a private part of the body, they tend to be intimate, compact and expressive.

And I begged, "Angel of the Lord, what are these tortured screams?" And the angel said unto me, "These are the cries of the carrots, the cries of the carrots! You see, Reverend Maynard, tomorrow is harvest day and to them it is the holocaust."